The opening action scene took six months of training and four days to shoot.
Carrie-Anne Moss performed the shots featuring Trinity at the beginning of the film, and all the wire stunts throughout, herself.
The studio insisted on a great deal of explanatory dialogue, as they described the screenplay as "the script that nobody understands."
Carrie-Anne Moss twisted her ankle while shooting one of her scenes, but decided not to tell anyone until after filming, so they wouldn't re-cast her.
According to costume designer Kym Barrett, Trinity's costume was made with cheap PVC because of the much tighter budget. Similarly, Neo's coat wasn't actually a very expensive fabric. It was a wool blend purchased for $3 a yard.